June 6th (2) ARC Event

June 6th ARC Event

Friday June 6th 2008 20:40 EST through 20:50 EST the Midwest ISO invoked the ARC procedure due to a 1,000 MW Net Schedule Interchange obligation created by TLR curtailments. Up to 18 percent of the available ARC operating reserves were utilized during this period to assist in correcting the imbalance. There were no ARS events initiated during the event although there was an active ARS event that was started prior to event.